✨📕 The NEWThe NEW Collegiate Dictionary, 12th Edition Over 5,000 words added — Buy Now! Collegiate DictionaryBuy Now!

lucid interval

noun

: a temporary period of rationality or neurological normality (as between periods of dementia or immediately following a fatal head injury)

Browse Nearby Words

Cite this Entry

“Lucid interval.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/lucid%20interval. Accessed 2 Dec. 2025.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!